Discontinued Product

Unfortunately TNP-ATP (Cat. No. 1294) has been withdrawn from sale for commercial reasons.
Cat.No. 1294 - TNP-ATP | C16H12N8O19P3 Li3Na2 | CAS No. 61368-63-6
Description: Potent, selective P2X antagonist
Chemical Name: 2¢,3¢-O-(2,4,6-Trinitrophenyl)adenosine-5¢-triphosphate

Biological Activity

High affinity, selective P2X receptor antagonist. Inhibits ATP-induced currents in cells expressing P2X1, P2X3 and P2X2/3 receptors with IC50 values of 6, 0.9, and 7 nM respectively. Displays 1000-fold selectivity over P2X2, P2X4 and P2X7.

Technical Data

M. Wt 780.04
Formula C16H12N8O19P3 Li3Na2
Storage Desiccate at -20°C
CAS Number 61368-63-6

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.

All Tocris products are intended for laboratory research use only.

Preparing Stock Solutions

The following data is based on the product molecular weight 780.04. Batch specific molecular weights may vary from batch to batch due to solvent of hydration, which will affect the solvent volumes required to prepare stock solutions.

Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.28 mL 6.41 mL 12.82 mL
5 mM 0.26 mL 1.28 mL 2.56 mL
10 mM 0.13 mL 0.64 mL 1.28 mL
50 mM 0.03 mL 0.13 mL 0.26 mL

Molarity Calculator

Calculate the mass, volume, or concentration required for a solution.

*When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and SDS / CoA (available online).

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Dilution Calculator

Calculate the dilution required to prepare a stock solution.

Product Datasheets

Certificate of Analysis is currently unavailable on-line.
Please contact Customer Service.
Safety Datasheet


References are publications that support the products' biological activity.

Lewis et al (1998) 2',3'-O-(2,4,6-trinitrophenyl) adenosine 5'-triphosphate (TNP-ATP) - a nanomolar affinity antagonist at rat mesenteric artery P2X receptor ion channels. Br.J.Pharmacol. 124 1463 PMID: 9723959

Thomas et al (1998) The antagonist trinitrophenyl-ATP reveals co-existence of distinct P2X receptor channels in rat nodose channels. J.Physiol. 509 411 PMID: 9575290

Virginio et al (1998) Trinitrophenyl-substituted nucleotides are potent antagonists selective for P2X1, P2X3 and heteromeric P2X2/3 receptors. Mol.Pharmacol. 53 969 PMID: 9614197

View Related Products by Target

View Related Products by Product Action

View all Purinergic (P2X) Receptor Antagonists

Keywords: TNP-ATP, supplier, High, affinity, selective, P2X, receptor, antagonist., Inhibits, ATP-induced, currents, in, cells, expressing, P2X1, P2X3, and, P2X2/3, receptors, with, IC50, values, of, 6, 0.9, 7, nM, respectively., Displays, 1000-fold, selectivity, over, P2X2, P2X4, P2X7., P2X, Receptors, P2X, Receptors, Tocris Bioscience

Citations for TNP-ATP

Citations are publications that use Tocris products.

Currently there are no citations for TNP-ATP.

Reviews for TNP-ATP

There are currently no reviews for this product. Be the first to review TNP-ATP and earn rewards!

Have you used TNP-ATP?

Submit a review and receive an Amazon gift card.

$10US/$10CAN/€7/£6 gift card for a review without an image

$25US/$25CAN/€18/£15 gift card for a review with an image

*Offer only valid in the USA / Canada, UK and Europe

Submit a Review

Literature in this Area

Tocris offers the following scientific literature in this area to showcase our products. We invite you to request* or download your copy today!

*Please note that Tocris will only send literature to established scientific business / institute addresses.


Cardiovascular Research Product Guide

A collection of over 250 products for cardiovascular research, the guide includes research tools for the study of:

  • Hypertension
  • Thrombosis and Hemostasis
  • Atherosclerosis
  • Myocardial Infarction
  • Ischemia/Reperfusion Injury
  • Arrhythmias
  • Heart Failure

Pain Research Product Guide

A collection of over 250 products for pain research, the guide includes research tools for the study of:

  • Nociception
  • Ion Channels
  • G-Protein-Coupled Receptors
  • Intracellular Signaling
P2X and P2Y Receptors

P2X and P2Y Receptors Scientific Review

Written by Kenneth Jacobson, this review provides an overview of the different subtypes and structures of the P2 receptor families, as well as the pharmacological probes used to study them; compounds available from Tocris are listed.


Pain Poster

Peripheral sensitization is the reduction in the threshold of excitability of sensory neurons that results in an augmented response to a given external stimulus. This poster outlines the excitatory and inhibitory signaling pathways involved in modulation of peripheral sensitization. The role of ion channels, GPCRs, neurotrophins, and cytokines in sensory neurons are also described.